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Occurrence of Salmonella spp.: a comparison between indoor and outdoor housing of broilers and laying hens.

Abstract Outdoor production of poultry is rapidly increasing, which could be associated with increased risks for exposure to different environmental sources of Salmonella. We report a comparison on the occurrence of Salmonella during 2007-2015 in broilers and laying hens in outdoor and indoor production subjected to the same requirements for the prevention and control of Salmonella as applied in Sweden.
PMID
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Authors

Mayor MeshTerms

Housing, Animal

Keywords

Broiler

Environmental exposure

Free-range

Indoor poultry production

Laying hen

Outdoor poultry production

Salmonella

Wildlife

Journal Title acta veterinaria scandinavica
Publication Year Start




PMID- 28222764
OWN - NLM
STAT- MEDLINE
DA  - 20170222
DCOM- 20170317
LR  - 20170317
IS  - 1751-0147 (Electronic)
IS  - 0044-605X (Linking)
VI  - 59
IP  - 1
DP  - 2017 Feb 21
TI  - Occurrence of Salmonella spp.: a comparison between indoor and outdoor housing of
      broilers and laying hens.
PG  - 13
LID - 10.1186/s13028-017-0281-4 [doi]
AB  - BACKGROUND: Outdoor production of poultry is rapidly increasing, which could be
      associated with increased risks for exposure to different environmental sources
      of Salmonella. We report a comparison on the occurrence of Salmonella during
      2007-2015 in broilers and laying hens in outdoor and indoor production subjected 
      to the same requirements for the prevention and control of Salmonella as applied 
      in Sweden. RESULTS: Our results give no indication that, during the period
      studied, the exposure to Salmonella in outdoor poultry production was higher than
      in the indoor production. The annual incidence of Salmonella infected flocks in
      outdoor production remained at a very low and at a similar level as for indoor
      production. For laying hens the annual proportion of birds in test positive
      flocks ranged from 0 to 1.3% for indoor production from 0 to 2.0% for outdoor
      production. For broilers the proportion of Salmonella infected flocks (2013-2015)
      was 0.16% for indoor, and 0% in outdoor production. The difference was not
      statistically significant and was further reduced when flocks infected due to
      vertical transmission or from a hatchery source were excluded. It should,
      however, be considered that the number of outdoor flocks included in this
      evaluation is very small and continuous evaluation is needed. CONCLUSIONS: New
      animal production systems, including those driven by consumer and welfare
      demands, may be associated with a higher risk for the exposure of potential
      pathogens to food animals and possibly also subsequent outbreaks of food borne
      infections. In this study no increase in the risk for exposure of flocks to
      Salmonella in outdoor poultry production was found. The situation may well change
      and the possibility of Salmonella contamination in outdoor poultry production
      requires continuous attention.
FAU - Wierup, Martin
AU  - Wierup M
AUID- ORCID: http://orcid.org/0000-0001-9075-3839
AD  - Department of Biomedical Sciences and Veterinary Public Health, Swedish
      University of Agricultural Sciences, P.O. Box 7028, SE-75007, Uppsala, Sweden.
      [email protected]
FAU - Wahlstrom, Helene
AU  - Wahlstrom H
AD  - Department of Disease Control and Epidemiology, National Veterinary Institute,
      SVA, SE-751 89, Uppsala, Sweden.
FAU - Lahti, Elina
AU  - Lahti E
AD  - Department of Disease Control and Epidemiology, National Veterinary Institute,
      SVA, SE-751 89, Uppsala, Sweden.
FAU - Eriksson, Helena
AU  - Eriksson H
AD  - Department of Animal Health and Antimicrobial Strategies, National Veterinary
      Institute, SVA, Osterakersvagen 21, SE-81040, Hedesunda, Sweden.
FAU - Jansson, Desiree S
AU  - Jansson DS
AD  - Department of Animal Health and Antimicrobial Strategies, National Veterinary
      Institute, SVA, Osterakersvagen 21, SE-81040, Hedesunda, Sweden.
FAU - Odelros, Asa
AU  - Odelros A
AD  - Asa Odelros AB, Osterakersvagen 21, SE-81040, Hedesunda, Sweden.
FAU - Ernholm, Linda
AU  - Ernholm L
AD  - Department of Disease Control and Epidemiology, National Veterinary Institute,
      SVA, SE-751 89, Uppsala, Sweden.
LA  - eng
PT  - Comparative Study
PT  - Journal Article
DEP - 20170221
PL  - England
TA  - Acta Vet Scand
JT  - Acta veterinaria Scandinavica
JID - 0370400
SB  - IM
MH  - Animal Husbandry/*methods
MH  - Animals
MH  - Chickens
MH  - Female
MH  - *Housing, Animal
MH  - Incidence
MH  - Male
MH  - Poultry Diseases/*epidemiology
MH  - Risk Factors
MH  - Salmonella/isolation & purification
MH  - Salmonella Infections, Animal/*epidemiology
MH  - Sweden/epidemiology
PMC - PMC5320760
OTO - NOTNLM
OT  - *Broiler
OT  - *Environmental exposure
OT  - *Free-range
OT  - *Indoor poultry production
OT  - *Laying hen
OT  - *Outdoor poultry production
OT  - *Salmonella
OT  - *Wildlife
EDAT- 2017/02/23 06:00
MHDA- 2017/03/18 06:00
CRDT- 2017/02/23 06:00
PHST- 2016/10/30 [received]
PHST- 2017/02/16 [accepted]
AID - 10.1186/s13028-017-0281-4 [doi]
AID - 10.1186/s13028-017-0281-4 [pii]
PST - epublish
SO  - Acta Vet Scand. 2017 Feb 21;59(1):13. doi: 10.1186/s13028-017-0281-4.

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